698406901 has 2 divisors, whose sum is σ = 698406902. Its totient is φ = 698406900.

The previous prime is 698406893. The next prime is 698406953. The reversal of 698406901 is 109604896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395612100 + 302794801 = 19890^2 + 17401^2 .

It is a cyclic number.

It is not a de Polignac number, because 698406901 - 2³ = 698406893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (698406001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349203450 + 349203451.

It is an arithmetic number, because the mean of its divisors is an integer number (349203451).

Almost surely, 2^698406901 is an apocalyptic number.

It is an amenable number.

698406901 is a deficient number, since it is larger than the sum of its proper divisors (1).

698406901 is an equidigital number, since it uses as much as digits as its factorization.

698406901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 698406901 is about 26427.3892202768. The cubic root of 698406901 is about 887.2299096395.

The spelling of 698406901 in words is "six hundred ninety-eight million, four hundred six thousand, nine hundred one".